WellFire VSR-10 Upgrade Set

Brand: WellFire Material: Aluminum Spring Strength: Up to 500 FPS Compatibility: WellFire VSR-10 Bolt Action Rifles [MB02, MB03, MB07, MB09, MB10, MB11, MB12] Package Includes: 1X Upgrade Spring, 1X Spring Guide, 1X Piston Features High quality stainless steel spring, piston and spring guide Durable O-ring provides tight air seal Spring guide ensures spring doesn't bind Compatible with Well VSR-10 Sniper Rifles